Patents by Inventor Raymond W. Heiligtag

Raymond W. Heiligtag has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4315700
    Abstract: An implement for use with a prime mover, such as a tractor, for applying a uniform coating of a liquid sealant to pavement comprising a plurality of spray tubes for spraying a coating of the liquid sealant onto the pavement and a rotary brush for brushing the sealant onto the pavement and for ensuring that a uniform coating of the sealant is applied to the pavement.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: February 16, 1982
    Inventors: Raymond W. Heiligtag, Donald G. Heiligtag, Donald R. Heiligtag
  • Patent number: 4231874
    Abstract: A waste treatment tank has a cylindrical enclosure defining a chamber. A cylindrical side wall of the enclosure and a cylindrical baffle are arranged concentrically with respect to one another. The side wall and baffle divide the chamber into first and second chamber portions. Means for generating a horizontal circulatory flow pattern in the first, radially outward chamber portion is mounted within that chamber portion and includes a submersible pump means. The pump means has an inlet, an outlet and connector means between the inlet and outlet. The second radially innermost chamber portion forms a clarification section, while the first chamber portion forms the aeration section of the waste treatment tank. Inlet means are provided between the first and second chamber portions. The baffle also permits the communication between first and second chamber portions along the bottom of the baffle. Means for supplying air to the aeration tank section is operatively attached to the connector means of the pump.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: November 4, 1980
    Inventor: Raymond W. Heiligtag